<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
    <!-- CSS only -->
    <link
      rel="stylesheet"
      href="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/css/bootstrap.min.css"
    />
    <style>
      .red {
        color: red!important;
      }
      .search {
        width: 300px;
        margin: 20px 0;
      }
      .my-form {
        display: flex;
        margin: 20px 0;
      }
      .my-form input {
        flex: 1;
        margin-right: 20px;
      }
      .table > :not(:first-child) {
        border-top: none;
      }
      .contain {
        display: flex;
        padding: 10px;
      }
      .list-box {
        flex: 1;
        padding: 0 30px;
      }
      .list-box  a {
        text-decoration: none;
      }
      .echarts-box {
        width: 600px;
        height: 400px;
        padding: 30px;
        margin: 0 auto;
        border: 1px solid #ccc;
      }
      tfoot {
        font-weight: bold;
      }
      @media screen and (max-width: 1000px) {
        .contain {
          flex-wrap: wrap;
        }
        .list-box {
          width: 100%;
        }
        .echarts-box {
          margin-top: 30px;
        }
      }
    </style>
  </head>
  <body>
    <div id="app">
      <div class="contain">
        <!-- 左侧列表 -->
        <div class="list-box">

          <!-- 添加资产 -->
          <form class="my-form">
            <input type="text" class="form-control" placeholder="消费名称" v-model.trim="name"/>
            <input type="text" class="form-control" placeholder="消费价格" v-model.number="price"/>
            <button type="button" class="btn btn-primary" @click="add()">添加账单</button>
          </form>

          <table class="table table-hover">
            <thead>
              <tr>
                <th>编号</th>
                <th>消费名称</th>
                <th>消费价格</th>
                <th>操作</th>
              </tr>
            </thead>
            <tbody>
              <tr v-for="(item, index) in list" :key="item.id">
                <td>{{ index + 1 }}</td>
                <td>{{ item.name }}</td>
                <td :class="{red: item.price >= 500}">{{ item.price.toFixed(2) }}</td>
                <td><a href="javascript:;" @click="remove(item.id)">删除</a></td>
              </tr>
            </tbody>
            <tfoot>
              <tr>
                <td colspan="4">消费总计： {{ count4Sum.toFixed(2) }}</td>
              </tr>
            </tfoot>
          </table>
        </div>
        
        <!-- 右侧图表 -->
        <div class="echarts-box" id="main"></div>
      </div>
    </div>
    <script src="https://cdn.jsdelivr.net/npm/echarts@5.4.0/dist/echarts.min.js"></script>
    <script src="https://cdn.jsdelivr.net/npm/vue@2/dist/vue.js"></script>
    <script src="https://cdn.jsdelivr.net/npm/axios/dist/axios.min.js"></script>
    <script>
      /**
       * 接口文档地址：
       * https://www.apifox.cn/apidoc/shared-24459455-ebb1-4fdc-8df8-0aff8dc317a8/api-53371058
       * 
       * 功能需求：
       * 1. 基本渲染
       * 2. 添加功能
       * 3. 删除功能
       * 4. 饼图渲染
       *  4.1 初始化饼图  echarts 需要等dom元素初始化后，mounted钩子函数中实现
       *  4.2 根据数据实时更新饼图 
       */
      const app = new Vue({
        el: '#app',
        data: {
            list: [],
            name: '',
            price: ''
        },
        created() {
            this.getList()
        },
        mounted() {
          this.myChart = echarts.init(document.querySelector('#main'))
          let option = {
            // 大标题
            title: {
              text: '消费账单列表',
              left: 'center'
            },
            // 提示框
            tooltip: {
              trigger: 'item'
            },
            // 图例
            legend: {
              orient: 'vertical',
              left: 'left'
            },
            // 数据项
            series: [
              {
                // 提示框显示的名称
                name: '消费账单',
                // 类型：饼图
                type: 'pie',
                // 半径
                radius: '50%',
                data: [],
                emphasis: {
                  itemStyle: {
                    shadowBlur: 10,
                    shadowOffsetX: 0,
                    shadowColor: 'rgba(0, 0, 0, 0.5)'
                  }
                }
              }
            ]
          }
          this.myChart.setOption(option)
        },
        computed: {
            count4Sum() {
                return this.list.reduce((sum, item) => (item.price + sum), 0)
            }
        },
        methods: {
            async getList() {
                const result = await axios.get("https://applet-base-api-t.itheima.net/bill", {
                    params:{
                        creator: 'yoyo'
                    }
                })
                if(result !== null){
                    this.list = result.data.data
                }

                // 更新图表(已经设置过的就无需再设置)
                this.myChart.setOption({
                  series: [
                    {
                      // data: [
                      //   { value: 1048, name: 'Search Engine' },
                      //   { value: 735, name: 'Direct' }
                      // ]
                      // 需要加对括号，用以识别为对象
                      data: this.list.map(item => ({value: item.price, name: item.name}))
                    }
                  ]
                })
            },
            async remove(id) {
                const result = await axios.delete(`https://applet-base-api-t.itheima.net/bill/${id}`)

                this.getList()
            },
            async add() {
                if(this.name === ''){
                    alert("请输入消费名称")
                    return
                }
                if(this.price === ''){
                    alert("请输入消费价格")
                    return
                }
                if(typeof(this.price) !== 'number' || this.price < 0){
                    alert("消费价格必须是大于等于0的数字")
                    return
                }
                const result = await axios.post("https://applet-base-api-t.itheima.net/bill", {
                    creator: 'yoyo',
                    name: this.name,
                    price: this.price
                })
                this.name = ''
                this.price = ''

                this.getList()
            }
        }   
      })
    </script>
  </body>
</html>
